Great Nicobar Project EIA and Seismic Hazard Assessments
Source:The Hindu ↗
Why It Matters
It provides a contemporary case study of the conflict between strategic infrastructure development and geological/environmental realities, highly relevant for Mains questions on the effectiveness of the EIA process and disaster vulnerability of island territories.
Summary
The Environment Impact Assessment (EIA) for the ₹72,000-crore Great Nicobar Infrastructure Project (GNIP) is facing scientific criticism for allegedly downplaying severe earthquake and tsunami risks. Situated in seismic zone V along the tectonically active Andaman Trench, where the Indian plate subducts under the Burmese Microplate, the island is highly vulnerable to mega-earthquakes. Independent scientists argue the EIA ignores unmapped fault lines and the region's violent geological history, raising concerns about the project's long-term viability and safety.
Key Points
- The ₹72,000-crore Great Nicobar Infrastructure Project (GNIP) encompasses a trans-shipment port, an international airport, a township, and a power plant.
- The Environment Impact Assessment (EIA) report, prepared by WAPCOS, is being criticized by scientists for significantly downplaying the risks of earthquakes and tsunamis in the region.
- Great Nicobar is located in Seismic Zone V, a highly active tectonic region where the Indian plate subducts beneath the Burmese Microplate along the Andaman Trench.
- Experts from IIT-Kanpur and NIAS warn of unknown rupture lines and high tectonic strain accumulation, pointing to the inevitability of future mega-earthquakes akin to the 2004 event.
- The controversy underscores potential flaws in the EIA process for large-scale infrastructure projects in geologically and ecologically fragile island ecosystems.
Important Terms
Great Nicobar Infrastructure Project (GNIP)
A ₹72,000-crore mega-infrastructure plan on Great Nicobar Island, featuring an international trans-shipment port, a greenfield airport, a power plant, and a new township.
UPSC context
GS Paper 3: Infrastructure and Environment; tests understanding of mega-projects balancing strategic growth with ecological/tribal safeguards.
Andaman and Nicobar Islands Integrated Development Corporation (ANIIDCO)
The project proponent and executing agency for the Great Nicobar Project; a government-owned corporation responsible for commercial and infrastructure development in the archipelago.
UPSC context
GS Paper 3: Economic Development; concerns the role of quasi-government agencies in high-risk environmental implementations.
NITI Aayog
India's premier policy think tank that conceived the 'Holistic Development of Great Nicobar Island' to leverage its strategic location near the Malacca Strait.
UPSC context
GS Paper 2: Statutory, regulatory and various quasi-judicial bodies; tests awareness of top-level policy planning and vision.
Environmental Impact Assessment (EIA)
A mandatory regulatory process that evaluates potential environmental impacts of a project before approval; currently controversial for allegedly underestimating seismic risks in Nicobar.
UPSC context
GS Paper 3: Environment; core syllabus topic involving the legal framework and stages of project clearances in India.
Ministry of Environment, Forest and Climate Change (MoEFCC)
The central authority that granted environmental and forest clearances for the Great Nicobar project, now subject to review by the National Green Tribunal.
UPSC context
GS Paper 3: Environment; regulatory role in conservation and environmental clearances for national projects.
IIT-Kanpur
An academic institution whose 2019 study on earthquake 'return periods' was used in the project's EIA, though experts now flag missing data on sediment history.
UPSC context
GS Paper 3: Science & Technology; relevance of technical research in informing disaster management and infrastructure safety.
National Institute of Advanced Studies (NIAS)
A Bengaluru-based research institute; its scientists have been vocal critics of the Great Nicobar project's seismic safety, citing parallel rupture lines and unknown history.
UPSC context
GS Paper 3: Disaster Management; highlights the importance of independent scientific review in identifying geological hazards.
Prelims Trap
"The Andaman Trench is formed by the Burmese Microplate subducting beneath the Indian Plate."
It is the denser Indian Plate that subducts beneath the Burmese Microplate, not the other way around. This ocean-ocean convergence creates the trench.
Static Concepts Connected
How do deep oceanic trenches form at tectonic boundaries?
- Convergent Boundaries: They form at convergent plate boundaries where two plates collide and one is forced beneath the other.
- Subduction Zone: The denser plate (e.g., the Indian plate) sinks into the mantle below the lighter plate (Burmese Microplate).
- Seismic Strain: Friction at these subduction zones accumulates immense strain, eventually releasing as megathrust earthquakes and tsunamis.
What is the statutory framework governing Environmental Impact Assessments in India?
- Legal Backing: EIA is statutorily backed by the Environment (Protection) Act, 1986.
- Project Categorization: Under the EIA Notification 2006, projects are categorized into 'A' (national clearance by MoEFCC) and 'B' (state clearance).
- Core Process: The mandated stages include screening, scoping, public consultation, and expert appraisal before clearance is granted.
Cross-Topic Patterns
Island Geopolitics vs. Tribal Conservation
GNIP's transshipment port is driven by India's maritime strategy to counter China's Malacca dilemma, clashing directly with coastal regulation rules and the protection of Particularly Vulnerable Tribal Groups (Shompen).
Subduction Zones & Tsunami Early Warning
The tectonic vulnerability of the Andaman trench directly ties into India's post-2004 disaster infrastructure, specifically the role of INCOIS and the Indian Ocean Tsunami Warning and Mitigation System.
Expect a multi-statement question mapping the Andaman subduction zone tectonics alongside Galathea Bay and the Great Channel in 2026.
Linked PYQs · 4
Linked PYQs · 4
- 2017PrelimsGS1
Which of the following is geographically closest to Great Nicobar?
- 2024MainsGS3
What role do environmental NGOs and activists play in influencing Environmental Impact Assessment (EIA) outcomes for major projects in India? Cite four examples with all important details.
- 2014MainsGS3
Environmental Impact Assessment studies are increasingly undertaken before a project is cleared by the Government. Discuss the environmental impacts of coal-fired thermal plants located at coal pitheads.
- 2025MainsGS1
What are Tsunamis? How and where are they formed? What are their consequences? Explain with examples.
